ENGINE (DIAGNOSTICS)(H4SO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P1499 EGR SOLENOID VALVE SIGNAL #4 CIRCUIT MALFUNCTION (HIGH INPUT)

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

• Improper idling

• Poor driving performance

• Engine breathing

CAUTION:

After repairing or replacing the defective part, perform the Clear Memory Mode and Inspection Mode .

WIRING DIAGRAM:

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND EGR VALVE CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from the EGR valve.

3) Turn the ignition switch to ON.

4) Measure the voltage between ECM and chassis ground.

Connector & terminal

DTC P1493; (B134) No. 8 (+) — Chassis ground (−):

DTC P1495; (B134) No. 9 (+) — Chassis ground (−):

DTC P1497; (B134) No. 10 (+) — Chassis ground (−):

DTC P1499; (B134) No. 20 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Repair the short circuit to power in the harness between the ECM and EGR valve connectors.

Repair the poor contact of the ECM connector.